Pitman-drive.



A. M. ANDERSON Sc-G, QUESNELL. HTMAN DRIVE. APPLIOATION FILED MAY 7,190B.

920,000. Patented .M11-.221909.

' mvemtoz's Witnesses f nNIrED PATENT OFFICE.

ANDnEn7 M. ANDERSONAND OORNELIUS OUEsNE-LIQ, kOE Moscow, IDAHO,ASSIGNORS 'ro l IDAIIO NATIoNAL HARVESTERl ooMrANYf'or Moscow, IDAHO. .j

` PITMANLDRivF,

Application ieaimray 7, i908.` serial No. 431,450.

To allah-om et may concern.

Be 1t known that we, ANDREW M. ANDER- the United States, residing atMoscow, in

the county of Latah and State of Idaho,` hhave inventedV 'a new anduseful Pitman Drive, of which the'following is a specifica tion. I

This invention relates to inachiiies-for harvesting grain and moreparticularly to mechanism for driving the sicklebar;

The object of the invention is to provide l mechanism nof this characterwhich-reduces bar and the operation of its parts.

Another object is to provide mechanism of this character particularlydesigned for use in connection with an adjustable or shiftable cutterbar such. asides'cribed Yand claimed in a co-pending applicationexecuted and filed by us! A furtherl object is to provide drivingmechanism which exerts a pull `in both directions upon the sickle barland is thus more effective thair similar mechanism which exerts a`pushinojaifid pulling action upon the bar as hereto ore.

Vith these and other objects in view the invention consists of certainnovel features of construction and combinations of parts which will behereinafter more fully described and pointed out in the claims.

In the accompanying drawings is shown the preferred formof theinvention.

In said drawings: Figure 1 is a plan view of a portion of a harvesterwith our. improved mechanism applied thereto. leg.Y 2 in a section online X-X, Fig. 1"

Referring to the figures by characters ofv reference, A designates `aframe on which thedraper or endless apro'nBr is mounted,

' Specificationv of Letters ilvatent.A

` patented Apen 27, 190e.

Extending laterally from the frame A is j j p s y ."abracket 1 havingforwardly diverging soN and CORNELIUS QUESNELL, citizens of' yarms 2extending therefrom, the rear or angle portion 3 of the bracket beingslotted transversely to receive Va walking beam 4 mounted on a suitablepivot 5. The forward ends ofthe arms 2 havegro'oved wheels s drawingsplates 8 have been riveted or otherwise fastened totheends ofthe beltand proto the minimum the jar and noise usually i produced by thereciprocation of the sickle pitman 14, there being preferably a ball andsocket connection 15 between the piti'nan and the wrist pin. The other'or forward end of the pitman is connected by a suitable universal joint16 with one end Vportion. of the walking beam 4. 1t is of course to beunderstood that when the machine is moving forward the shaft Z) will bedriven by means of any suitable mechanism, notshown, and motion will betransmitted therefrom to the walking beam l througlli wrist pin 13` andpitman 14'. The oscillation of the walking beamwill cause the belt 17 tomove in the 'direction of its length and to pullalternately in oppositedirections upon the joint 10i- 11 and cause the sickle bar D and itsafin E to reciprocate. Thisinove'ment will be produced 'practicallywithout noise or vibration because of the flexible drivingconnectionkbetween the walking beam and the army E,ithat l'portion ofthe `belt 7 to' Vwhich the connection 10-11 is fastened be# ingniovable'in a line parallel with the di .rection of movement of thesickle bar. In- Vasmuch as this driving mechanism is designed for use inconnection with a verticallyswinging cutter bar it will be apparent thatany change of position of the cutter bar 'ends of its strokes.

produced by swinging it upon its pivot a will not affect theV operationof the parts bccause of the use of the ball and socket connection 10-11and of the fact that the belt 7 is flexible andcapable of bendingtransversely to any desired extent. By providing the threaded stems 9the belt 7 can be adjusted longitudinally so as to bring the connectionlO--jll at any desired point between the wheels 6 when at the middle orImportance is attached to the fact that this mechanism operates to pullupon the sickle bar during both strokes thereof, thus doing away withthe push and pull movements ordinarily utilized.

That is claimed is:

l. The combination with a reciprocating sickle bar; of drive mechanismtherefor comprising a flexible power transmitting device, a connectionbetween said device and the sickle bar, and means for reciprocating` aportion of said device and the connection along lines parallel with thedirection of movement of the sickle bar.

2. The combination with a longitudinally movable sickle bar; of drivingmechanism therefor comprising a walking beam, a ilexible powertransmitting device connected to and reciprocated by the walking beam,guides for said flexible device and a connection between said device andthe sickle bar.

3. The combination with a longitudinally movable sickle bar; of drivingmechanism therefor comprising a flexible power transmitting device, aconnection between said device and the sickle bar, a portion of saiddevice being movable parallel with the sickle bar, and mechanism forreciprocating said flexible device.

4. The combination with a longitudinally movable sickle bar; of drivingmechanism therefor comprising a walking beam, a ilexible powertransmitting device connected t0 and actuated by the walking beam,guides for said device, a jointed connection between said device and thesickle bar, and means for actuating the walking beam to reciprocate aportion of said device in a plane parallel with the direction ofmovement 0f the sickle bar.

5. .The combination with a longitudinally movable sickle bar; of awalking beam, relatively lixed guide wheels, a flexible device connectedto the end portions of the walking beam and mounted upon the wheels,that portion of said device between the wheels being p arallel with thedirection of movement of the sickle bar, a connection between the sicklebar and the parallel portion of the flexible device, and means foractuating the walking beam.

(3.. The combination with a relatively movable sickle bar; of a walkingbeam, a llexible power transmitting device connected to and reciprocatedby the walking beam, a connection between said device and the sickle.bar, and means for actuating the walking beam.

7. The combination with a longitudinally movable sickle bar; of aflexible power transmitting device movable parallel with the directionof movement of the sickle bar, a connection between said device and thesickle bar, and means for reciprocating said device.

8. The combination withr a longitudinally movable sicklebar; of ailexible power transmitting device movable parallel with the di rectionof movement ol the sickle bar, a connection between said device and thesickle bar, and a walking beam connected to and disposed to reciprocatesaid device.

The combination with a longitudimilly movable sickle bar; of a flexiblepower transmitting device movable parallel with the direction ofmovement of the .sickle bar, a connection between said device and thesickle bar, a -alking beam connected to said device, and means foroscillating the walking beam to reciprocate said devices.

l0. The combination with alongtudinallyY movable sickle bar; of aflexible power transmitting device movable parallel with the directionof movement of the sickle bar, a connection between said device and thesickle bar, spaced guides for said device, a revoluble drive device. andmechanism operated by said revoluble device for reciprocating theflexible power transmitting device.

ll. The combination with a conveyer carrying frame and a linger barpivotallv mounted upon said frame, and a longitudinally movable sicklebar; of a. bracket carried/by the frame, spaced guide wheels supportedby the bracket, a walking beam. a flexible belt secured a t its ends tosaid walking beam and mounted upon the wheels, a

ANDREXV M. ANDERSON. CORNELIUS QUESNELL.

litnesses J. M. THOMPSON, Gr. P. Mix.

